CN116486665A - Construction method of cataract surgery simulation teaching model based on digital twin technology - Google Patents

Abstract

The invention discloses a method for constructing a cataract surgery simulation teaching model based on digital twin technology. The invention has the following beneficial effects: (1) Create a 3D eyeball model based on digital twin technology, which can dynamically display eyeball structure and disease knowledge, and deepen residents’ understanding of cataract basic knowledge and diagnosis and treatment process; (2) Use VR and force feedback devices to create a cataract surgery simulation teaching model that does not require physical micromanipulation equipment. Through the virtual space transplantation of surgical operations, residents can truly experience the effect of surgical instruments on the 3D eyeball model. Experience the operation process of cataract surgery; (3) Establish a cataract surgery simulation training feedback and scoring system, through real-time monitoring and feedback of the training process, guide residents to master the essentials of operation and form good surgical operation specifications during repeated training.

Description

Construction method of cataract surgery simulation teaching model based on digital twin technology

technical field

The invention relates to the technical field of cataract surgery simulation teaching, in particular to a method for constructing a cataract surgery simulation teaching model based on digital twin technology.

Background technique

With the advancement of medical technology and equipment, cataract surgery has developed into a minimally invasive phacoemulsification surgery, which has the advantages of rapid vision recovery, good surgical results and fewer complications. It is one of the most cost-effective treatments and one of the most commonly used microsurgeries in ophthalmology. According to the content and standards of the standardized training of residents in ophthalmology, the standardized training of ophthalmology residents needs to understand and master the operation process of cataract surgery.

However, it is extremely difficult to achieve the ideal standardized training effect in the actual clinical environment. First of all, the eyeball is a very precise visual organ. Cataract surgery requires high precision microscopic manipulation by the operator. A slight deviation in the operation may cause irreparable damage to the visual function of the patient. Secondly, cataract surgery has moved from blindness to the era of refraction, and patients have high requirements for surgical results. As a result, there are few opportunities for ophthalmology residents to practice clinically and insufficient training in microsurgery skills, which greatly prolongs the training period for ophthalmology cataract surgery talents. Therefore, how to develop a safe and convenient cataract surgery simulation teaching tool has become an urgent problem to be solved in the teaching of microsurgery for ophthalmology residents.

Contents of the invention

(1) Solved technical problems

Aiming at the deficiencies of the prior art, the present invention provides a method for constructing a cataract surgery simulation teaching model based on digital twin technology, which can solve the above-mentioned technical problems.

(2) Technical solutions

In order to solve the above technical problems, the present invention provides the following technical solutions: a method for constructing a cataract surgery simulation teaching model based on digital twin technology, comprising the following steps:

S1: Build a 3D eyeball model based on digital twin technology;

S2: Using VR and force feedback devices to perform cataract surgery on the eyeball tissue of the 3D eyeball model in the virtual space;

S3: Collect the morphological change data of eyeball tissue during cataract surgery and the mechanical parameters during cataract surgery;

S4: Synchronize the morphological change data and mechanical parameters of eyeball tissue to the 3D eyeball model to establish a cataract surgery simulation teaching model.

Preferably, step S1 specifically includes the following sub-steps:

S11: Acquiring data required for building a 3D eyeball model;

S12: Identify and clean the data;

S13: Using data and digital modeling software to construct a static model of the 3D eyeball model;

S14: Automatically generate a dynamic simulation model of a 3D eyeball model from a static model based on a data matching method.

Preferably, after the sub-step S14, a sub-step S15 is further included: presenting the eyeball anatomy and deconstruction of the 3D eyeball model, the physiological and pathological characteristics of the eyeball tissue, and the pathogenesis of cataract disease on the visual device.

Preferably, step S2 specifically includes the following sub-steps:

S21: Modeling the eyeball tissue by using a triangulation method to subdivide the eyeball tissue into multiple triangles;

S22: Use VR, force feedback devices and surgical instruments to perform cataract surgery on eyeball tissue in virtual space;

S23: Detect the position and degree of action of the surgical instrument in contact with the eyeball tissue;

S24: Simulate the normal force of the surgical instrument acting on the surface of the eyeball tissue on each triangle.

Preferably, step S3 specifically includes: collecting the morphological change data of the eyeball tissue during the cataract operation through the operation video equipment, and simultaneously collecting the mechanical parameters during the cataract operation through the force feedback device.

Preferably, step S5 is further included after step S4: performing cataract surgery simulation training feedback and scoring.

Preferably, step S5 specifically includes the following sub-steps:

S51: Students use the simulated surgery teaching kit to perform cataract surgery on the 3D eyeball model. The simulated surgery teaching kit includes VR, force feedback device and surgical instruments;

S52: Collect in real time the position and mechanical parameters of the surgical instruments acting on the eyeball tissue of the students during the cataract surgery process, and collect the morphological change data of the student's eyeball tissue during the cataract surgery process, and generate the student's surgical model;

S53: Comparing the student's surgical model with the teacher's surgical model.

Preferably, sub-step S53 is specifically: comparing the student's surgical model with the teacher's surgical model, and evaluating the student's surgical training through expert evaluation.

Preferably, step S5 also includes a sub-step S54: conducting a comprehensive assessment and generating an operation optimization plan to further guide students to perform the operation.

(3) Beneficial effects

Compared with the prior art, the present invention provides a method for constructing a cataract surgery simulation teaching model based on digital twin technology, which has the following beneficial effects: (1) Create a 3D eyeball model based on digital twin technology, and the 3D eyeball model can perform dynamic display of eyeball structure and disease knowledge, and deepen residents’ understanding of cataract basic knowledge and diagnosis and treatment process; (2) Use VR and force feedback devices to create a cataract surgery simulation teaching model that does not require physical micromanipulation equipment. The effect of the device acting on the 3D eyeball model, cataract surgery simulation has a high degree of authenticity, allowing residents to experience the cataract surgery operation process; (3) Establish a cataract surgery simulation training feedback and scoring system, through real-time monitoring and feedback of the training process, guide residents to master the essentials of operation during repeated training and form a good surgical operation specification. Through the above method, the present invention can provide a safe, convenient, highly authentic and interactive learning platform for exercising and improving the cataract microsurgery skills of ophthalmology residents.

Description of drawings

Fig. 1 is a step flow chart of a method for constructing a cataract surgery simulation teaching model based on digital twin technology in the present invention;

Fig. 2 is the step flowchart of step S1 of the present invention;

Fig. 3 is the flow chart of steps S2-S4 of the present invention;

FIG. 4 is a flow chart of step S5 of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The present invention provides a method for constructing a cataract surgery simulation teaching model based on digital twin technology, comprising the following steps:

S1: Construct a 3D eyeball model based on digital twin technology.

Digital twin is to make full use of physical model, sensor update, operation history and other data, integrate multi-discipline, multi-physical quantity, multi-scale, multi-probability simulation process, and complete the mapping in the virtual space, so as to reflect the whole life cycle process of the corresponding physical equipment. The rapid development of digital twin technology has made it possible to develop surgical simulation training tools. Through the application of digital modeling, Internet of Things, information perception, artificial intelligence (AI), cloud computing and other technologies, digital twin technology can construct various dynamic simulation models, which can be used in teaching, equipment research and development, disease diagnosis and treatment, disease evolution and mechanism research and other fields.

Specifically, the step S1 specifically includes the following sub-steps:

S11: Obtain data required for building a 3D eyeball model. Specifically, real-world data on the basic structure and physiological functions of the eyeball, the occurrence and development of cataracts, and the diagnosis and treatment process are collected through ophthalmic examination equipment and medical information systems (HIS, EMR, LIS, PACS systems, etc.).

S12: Identify and clean the data. By identifying and cleaning the acquired data, the type and attributes of the data meet the requirements of building a 3D eyeball model.

S13: Using data and digital modeling software to build a static model of the 3D eyeball model. In this sub-step S13, various initial 3D eyeball models, ie static models, are constructed by using the acquired and processed structured data, combining ophthalmology, material mechanics, optics and other theories, and using various 3D model modeling tools.

S14: Automatically generate a dynamic simulation model of a 3D eyeball model from a static model based on a data matching method. The sub-step S14 automatically generates a dynamic simulation model from the static model based on the data matching method, and continuously optimizes it through real-time data feedback, finally making the anatomical deconstruction and physiological and pathological characteristics of the 3D eyeball model infinitely close to the real eyeball.

For example, first, outline the overall outline of the eyeball, locate the overall and local tissue space parameters through the program, first build the overall model of the eyeball, and then build cornea, iris, ciliary muscle, lens, vitreous body, sclera, iris, retina and other important tissues. Then, according to the characteristic application program of eyeball physiological movement parameters, the physiological changes of the eyeball and its tissues are realized. For example, we control the pupil zoom by adjusting the inner diameter and thickness of the iris, the length and thickness of the ciliary muscle, and the diameter and thickness of the crystal; and the pupil color control is achieved by multiplying the original model texture by the defined color attribute.

In addition, after the above sub-step S14, a sub-step S15 is also included: presenting the eyeball anatomy and deconstruction of the 3D eyeball model, the physiological and pathological characteristics of the eyeball tissue, and the pathogenesis of cataract disease on the visual device. Specifically, on visual devices such as PCs, VR or mobile terminals, the anatomy and deconstruction of the eyeball can be presented in a full-view and multi-dimensional way, and the physiological and pathological characteristics of the eyeball tissue and the pathogenesis of cataract and other diseases can be dynamically presented.

S2: Using VR and force feedback device to perform cataract surgery on the eyeball tissue of the 3D eyeball model in the virtual space.

VR (Virtual Reality, virtual reality) is a combination of virtual and reality, which can create and experience a virtual world. The force feedback device is a stimulator for tactile perception, and the force feedback device of the present invention may specifically adopt a force feedback glove. Cataract surgery may specifically include phacoemulsification and intraocular lens implantation.

Specifically, the step S2 specifically includes the following sub-steps:

S21: Model the eyeball tissue using a triangulation method to subdivide the eyeball tissue into multiple triangles.

S22: Use VR, force feedback devices and surgical instruments to perform cataract surgery on eyeball tissue in virtual space.

S23: Detect the position (corresponding to the triangular area) and the degree of action (depth) of the surgical instrument in contact with the eyeball tissue.

S24: Simulate the normal force of the surgical instrument acting on the surface of the eyeball tissue on each triangle.

S3: Collect the morphological change data of eyeball tissue during cataract surgery and the mechanical parameters during cataract surgery.

Preferably, the step S3 specifically includes: collecting the morphological change data of the eyeball tissue during the cataract operation through the operation video equipment, and simultaneously collecting the mechanical parameters during the cataract operation through the force feedback device. The mechanical parameters may specifically include the pressure and friction of fingers acting on surgical instruments during cataract surgery, and the pressure and friction of surgical instruments acting on the surface of eyeball tissue.

S4: Synchronize the morphological change data and mechanical parameters of eyeball tissue to the 3D eyeball model to establish a cataract surgery simulation teaching model.

Preferably, step S5 is further included after step S4: performing cataract surgery simulation training feedback and scoring.

Further, the above step S5 specifically includes the following sub-steps:

S51: Students use the simulated surgery teaching kit to perform cataract surgery on the 3D eyeball model. The simulated surgery teaching kit includes VR, force feedback devices and surgical instruments. Students use the simulated surgery teaching kit to perform surgery on the 3D eyeball model. During this process, students can truly feel the touch and force of the virtual surgical instruments acting on the 3D eyeball model, and can see the changes in the shape of the eyeball tissue in real time.

S52: Collect in real time the position and mechanical parameters of the surgical instruments acting on the eyeball tissue of the student during the cataract operation, and collect the morphological change data of the student's eyeball tissue during the cataract operation to generate the student's surgical model.

S53: Comparing the student's surgical model with the teacher's surgical model. It should be understood that the teacher's surgical model is a surgical model generated by the teacher by using the simulated surgical teaching kit to perform cataract surgery on the 3D eyeball model.

Preferably, the sub-step S53 is specifically: comparing the student's surgical model with the teacher's surgical model, and evaluating the student's surgical training through expert evaluation. That is, through expert evaluation and student-teacher model comparison, the dual mechanism evaluates the key links of student surgery.

In addition, step S5 also includes a sub-step S54: conducting a comprehensive assessment and generating an operation optimization plan to further guide students to perform operations. Specifically, it can be comprehensively evaluated according to the technical specifications of cataract surgery operation, the operation proficiency of the students in the operation process, and the situation of mistakes in the operation, and the operation optimization plan can be generated accordingly.

Compared with the prior art, the present invention provides a method for constructing a cataract surgery simulation teaching model based on digital twin technology, which has the following beneficial effects: (1) Create a 3D eyeball model based on digital twin technology, and the 3D eyeball model can perform dynamic display of eyeball structure and disease knowledge, and deepen residents’ understanding of cataract basic knowledge and diagnosis and treatment process; (2) Use VR and force feedback devices to create a cataract surgery simulation teaching model that does not require physical micromanipulation equipment. The effect of the device acting on the 3D eyeball model, cataract surgery simulation has a high degree of authenticity, allowing residents to experience the cataract surgery operation process; (3) Establish a cataract surgery simulation training feedback and scoring system, through real-time monitoring and feedback of the training process, guide residents to master the essentials of operation during repeated training and form a good surgical operation specification. Through the above method, the present invention can provide a safe, convenient, highly authentic and interactive learning platform for exercising and improving the cataract microsurgery skills of ophthalmology residents.

It should be noted that the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed or elements inherent in such a process, method, article or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Although the embodiment of the present invention has been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. The method for constructing the cataract surgery simulation teaching model based on the digital twin technology is characterized by comprising the following steps of:

s1: constructing a 3D eyeball model based on a digital twin technology;

s2: performing cataract surgery on eyeball tissues of the 3D eyeball model in a virtual space by utilizing VR and a force feedback device;

s3: collecting morphological change data of the eyeball tissue during the cataract surgery and mechanical parameters during the cataract surgery;

s4: synchronizing the morphological change data of the eyeball tissues and the mechanical parameters to the 3D eyeball model to establish a cataract surgery simulation teaching model.

2. The method for constructing a digital twinning-based cataract surgery simulation teaching model according to claim 1, wherein the step S1 specifically comprises the following substeps:

s11: acquiring data required for constructing the 3D eyeball model;

s12: identifying and cleaning the data;

s13: constructing a static model of the 3D eyeball model by utilizing the data and digital modeling software;

s14: and automatically generating a dynamic simulation model of the 3D eyeball model from the static model based on a data matching method.

3. The method for constructing a digital twinning-based cataract surgery simulation teaching model according to claim 2, characterized by further comprising the substep S15 after the substep S14: and presenting eyeball de-dissection, eyeball tissue physiological and pathological characteristics and cataract disease pathogenesis of the 3D eyeball model on visual equipment.

4. The method for constructing a digital twinning-based cataract surgery simulation teaching model according to claim 1, wherein the step S2 specifically comprises the following substeps:

s21: modeling the eye tissue using a triangulation method to subdivide the eye tissue into a plurality of triangles;

s22: performing cataract surgery on the eyeball tissue in a virtual space by using the VR, a force feedback device and a surgical instrument;

s23: detecting the contact position and action degree of the surgical instrument and the eyeball tissues;

s24: the normal force of the surgical instrument on the eyeball tissue surface is simulated on each triangle.

5. The method for constructing a simulated teaching model for cataract surgery based on digital twinning technique according to claim 4, wherein the step S3 is specifically: the morphological change data of the eyeball tissues during cataract surgery is collected through a surgical video device, and meanwhile, the mechanical parameters during cataract surgery are collected through the force feedback device.

6. The method for constructing a digital twin technology-based cataract surgery simulation teaching model according to claim 5, further comprising step S5 after step S4: simulation training feedback and scoring of cataract surgery are performed.

7. The method for constructing a simulated teaching model for cataract surgery based on digital twinning technique according to claim 6, wherein the step S5 specifically comprises the following substeps:

s51: performing cataract surgery on the 3D eye model using a simulated surgical teaching set, wherein the simulated surgical teaching set comprises the VR, a force feedback device, and a surgical instrument;

s52: collecting the position and mechanical parameters of the student acting on the eyeball tissues by the surgical instrument in the cataract surgery process in real time, and collecting the morphological change data of the eyeball tissues of the student in the cataract surgery process to generate a student surgery model;

s53: and comparing the student operation model with a teacher operation model.

8. The method for constructing a digital twin technology-based cataract surgery simulation teaching model according to claim 7, wherein the substep S53 is specifically: and comparing the student operation model with a teacher operation model, and scoring the operation training of the student by expert comment.

9. The method for constructing a digital twin technology-based cataract surgery simulation teaching model according to claim 8, wherein the step S5 further comprises the substep S54: and (5) performing comprehensive evaluation to generate a surgery optimization scheme so as to further guide students to perform surgery.